xapian/xapian — pull request #6 by aarshkshah1992 (2013-02-27 20:49:44+00:00)
Title: The TfIdf Weighting scheme 

Ive yet to add tests for this weighting scheme .The code for tfidfweight.cc does not contain LOGCAL as Ill add it and all relevant documentation for this scheme after working on the feedback.Have implemented all normalizations possible with the current statistics . The code is written in a way that is easy to add more normalizations after rewriting the backend for additional statistics.